We use cookies

We use cookies and similar technologies to enhance your browsing experience, analyze site traffic, and personalize content and ads. By clicking "Accept", you consent to our use of cookies. Learn more in our Privacy Policy.

Cosmovex

// Developer Tools

Home/Apps/API Client -REST & HTTP Tester
API Client -REST & HTTP Tester app icon

API Client -REST & HTTP Tester

API Testing500+ downloadsby Cosmovex

Test APIs anywhere, anytime.

A fast and intuitive REST API client for mobile. Send HTTP requests, inspect responses, manage headers, save collections, and debug APIs without opening your laptop.

All HTTP MethodsCollectionsAuth HeadersResponse Inspector

About API Client -REST & HTTP Tester

RESTPilot is a powerful REST API testing tool built for developers on the go. Send GET, POST, PUT, PATCH, DELETE, and HEAD requests with full control over headers, query parameters, and request bodies. Inspect responses with syntax-highlighted JSON/XML viewing, response headers, status codes, and timing information. Save your requests into organized collections for quick access. RESTPilot supports all authentication methods including Bearer tokens, Basic auth, and custom headers. Import and export collections to share with your team. Whether you're debugging a production API, testing a new endpoint, or learning REST APIs, RESTPilot gives you Postman-like power in your pocket.

Screenshots

See it in action

API Client -REST & HTTP Tester screenshot 1API Client -REST & HTTP Tester screenshot 2API Client -REST & HTTP Tester screenshot 3API Client -REST & HTTP Tester screenshot 4API Client -REST & HTTP Tester screenshot 5API Client -REST & HTTP Tester screenshot 6
Features

Everything You Need

All HTTP Methods

Send GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS requests. Full control over URL, headers, query parameters, and request body (JSON, form-data, raw text).

Response Inspector

View response body with syntax highlighting for JSON, XML, and HTML. Inspect response headers, status codes, response time, and content size.

Request Collections

Organize your API requests into collections and folders. Save frequently used requests for instant replay. Import and export collections to share with teammates.

Authentication Support

Built-in support for Bearer token, Basic auth, API key, and custom header authentication. Save auth tokens per collection for seamless testing.

Request History

Every request is automatically saved to history. Search, filter, and replay past requests. Never lose a request you forgot to save.

Environment Variables

Define variables for base URLs, tokens, and common values. Switch between development, staging, and production environments with one tap.

Ready to Try API Client -REST & HTTP Tester?

Free to download. No account required. Available on Android and iOS.

FAQ

Frequently Asked Questions

More from Cosmovex

Explore our other developer tools

WebEva: Build Websites & Code

WebEva: Build Websites & Code

Web Development

Build websites from your phone.

DevBuddy: Offline Dev Toolkit

DevBuddy: Offline Dev Toolkit

Developer Tools

Your pocket developer toolkit.

ShellPilot - Batch SSH Client

ShellPilot - Batch SSH Client

DevOps & Servers

SSH terminal & SFTP on the go.

HTML Viewer & Editor - Code

HTML Viewer & Editor - Code

Code Editor

View & edit HTML on mobile.

JSON Editor - Viewer & Format

JSON Editor - Viewer & Format

Data Tools

View, edit & format JSON instantly.

SQLite Editor & SQL Learner

SQLite Editor & SQL Learner

Data Tools

Manage SQLite databases on mobile.

Python IDE - Offline Compiler

Python IDE - Offline Compiler

Code Editor

Write and run Python on your phone.

Java & Kotlin Compiler IDE

Java & Kotlin Compiler IDE

Code Editor

Write and run Java on your phone.

PDF Viewer & Editor - AI

PDF Viewer & Editor - AI

Productivity

Edit, convert & sign PDFs on mobile.

XML Viewer & Editor

XML Viewer & Editor

Data Tools

View, edit & validate XML on mobile.

Open CSV — Viewer & Editor

Open CSV — Viewer & Editor

Data Tools

Open and edit CSV files on mobile.

JavaScript Editor — React IDE

JavaScript Editor — React IDE

Code Editor

Run JavaScript and React on your phone.

Image to SVG Converter, Viewer

Image to SVG Converter, Viewer

Design Tools

Convert images to SVG and edit vectors on mobile.

YAML / YML Viewer & Editor

YAML / YML Viewer & Editor

Data Tools

View, edit & validate YAML instantly.

Markdown Editor & MD Viewer

Markdown Editor & MD Viewer

Text Editor

Write and preview Markdown on mobile.

Network Toolkit: WiFi IP Tools

Network Toolkit: WiFi IP Tools

Network Tools

Network utilities and diagnostic tools.

Code Editor - Text & Notepad

Code Editor - Text & Notepad

Text Editor

Edit text files on mobile.

C / C++ Compiler IDE

C / C++ Compiler IDE

Developer Tools

Compile & run C and C++ on your phone.

Diagram Maker: Flow & ERD

Diagram Maker: Flow & ERD

Design Tools

Draw flowcharts & ERDs on mobile.

QR Scanner & Generator

QR Scanner & Generator

Tools

Scan codes with confidence

Zip Extractor — Unzip RAR 7Z

Zip Extractor — Unzip RAR 7Z

Tools

Open ZIP, RAR, and 7Z files

PromptCrate: AI Prompt Manager

PromptCrate: AI Prompt Manager

Productivity

Your personal AI prompt library

Markdown & MD: Notes, AI

Markdown & MD: Notes, AI

Developer Tools

AI markdown workspace with Mermaid & GitHub sync.